update eslint config

[EWhite613]

Semver

This project uses semver, please check the scope of this PR:

• [ ] #none#
• [ ] #patch#
• [x] #minor#
• [ ] #major#

Examples:

• NONE
  • README.md changes
  • test additions
  • changes to files that are not used by a consuming application (.travis.yml, .gitignore, etc)
• PATCH
  • backwards-compatible bug fix
  • nothing about how to use the code has changed
  • nothing about the outcome of the code has changed (though it likely corrected it)
• MINOR
  • adding functionality in a backwards-compatible manner
  • nothing about how used to use the code has changed but using it in a new way will do new things
  • nothing about the outcome of the code has changed without having to first use it in a new way
• MAJOR
  • incompatible API change
  • using the code how used to will cease working
  • using the code how used to will have a different outcome

CHANGELOG

• Upgrade eslint-plugin-ember-standard